User Controls; Gain Mode; Output Level Adjust - evertz 2406LR User Manual

5.

USER CONTROLS

There are removable plugs covering the Gain Mode and Output Level Adjust rotary dials. Once these
plugs are removed, the dials can be used for fine tuning the device and selecting the auto gain modes.
5.1.

GAIN MODE

The 2406LR has two gain modes: AGC "0" and Manual "1".

Note: Selecting Gain Modes other than 0 and 1 on the rotary dial will cause a
misconfiguration.
AGC will maintain the output of the 2406LR at a constant level even if the input signal level changes,
but remains within the AGC hold range.

If conducting frequency response sweeps, both the 2406LR and the companion
transmitter should NOT be on AGC mode and should be set to a manual gain value.
5.2.

OUTPUT LEVEL ADJUST

When the Gain Mode switch is in manual mode, the Output Level Adjust switch allows the user to
make gain adjustments from -5dB to +25dB. Each step on the rotary switch represents a 2dB gain
change.
When the Gain Mode switch is in AGC mode, the Output Level Adjust switch allows the user to set the
AGC target level from -10dB to -40dB in 2dB steps.
Gain Mode Switch Position
0 (AGC)
1 (Manual)
L-Band/Wideband Standalone Fiber Receiver
Output Level Adjust Switch Function
AGC: -10 to -40dB in 2dB steps
Manual Gain: -5dB to 25 dB in 2dB steps
Table 5-1: Output Level Adjust Switch
Revision 1.0
2406LR
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